Home / 15,297.67-21,117.26-9,331.48

Finding the Fourth Proportional to 15,297.67, 21,117.26 and 9,331.48

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Solution

The fourth proportional to 15,297.67, 21,117.26 and 9,331.48 is: 12,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.67 : 21,117.26 = 9,331.48 : x
  2. Step 2: Convert to fraction form
    15,297.67/21,117.26 = 9,331.48/x
  3. Step 3: Cross multiply
    15,297.67x = 21,117.26 × 9,331.48
  4. Step 4: Simplify right side
    15,297.67x = 197,055,289.34
  5. Step 5: Solve for x
    x = 197,055,289.34/15,297.67
  6. Step 6: Final answer
    x = 12,881.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.